Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO2 treatment?
文献类型：期刊论文
| 作者 | Sun, Jianfei1,2,3; Dai, Weiwei1; Peng, Bo1,3; Liu, Jun1,3; He, Tongxin1,2,3; Jiang, Ping1; Han, Shijie1; Bai, Edith1,4 |
| 刊名 | BIOGEOCHEMISTRY
 |
| 出版日期 | 2018-07-01 |
| 卷号 | 139期号:2页码:197-213 |
| 关键词 | Climate Change c And n Stocks c And n Cycling Gross n Transformation Delta C-13 And Delta N-15 Progressive n Limitation |
| ISSN号 | 0168-2563 |
| DOI | 10.1007/s10533-018-0463-9 |
| 英文摘要 | The stimulation of plant growth and biomass accumulation by elevated CO2 may be limited by soil nitrogen (N) availability. However, our understanding of the response of soil N cycling to elevated CO2 and when progressive N limitation occurs remains limited. Here, we used an open top chamber experiment to examine the effects of 10 years of elevated CO2 on ecosystem carbon (C) and N dynamics in a Quercus mongolica (oak) dominated system in northeastern China. Elevated CO2 increased oak biomass, C and N stocks and C/N by 26.4, 26.2, 16.5 and 8.6% respectively, which suggests increased plant N demand. Soil gross N mineralization, re-mineralization of microbial N and nitrification were accelerated likely due to increased photosynthesis (by 34.9%) and microbial biomass (by 24.2%) under elevated CO2. Thus, the supply of soil available N can sustain the tree growth stimulated by elevated CO2, and to date progressive N limitation has not happened. Nevertheless, both the annual increase of oak biomass, C and N stocks and C/N ratio and the seasonal variations of soil available N and microbial N concentrations, and net N transformation rates indicated that gradual N deficiency may be occurring and the CO2 fertilization effect has weakened with increasing treatment duration. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000435798800006 |
| 出版者 | SPRINGER |
| 源URL | [http://210.72.129.5/handle/321005/106523]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 通讯作者 | Bai, Edith |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Guangxi Teachers Educ Univ, Key Lab Beibu Gulf Environm Change & Resources Us, Minist Educ, 175 Mingxiu East Rd, Nanning 530001, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 4.Northeast Normal Univ, Sch Geog Sci, 5268 Renmin Rd, Changchun 130024, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Jianfei,Dai, Weiwei,Peng, Bo,et al. Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO2 treatment?[J]. BIOGEOCHEMISTRY,2018,139(2):197-213. |
| APA | Sun, Jianfei.,Dai, Weiwei.,Peng, Bo.,Liu, Jun.,He, Tongxin.,...&Bai, Edith.(2018).Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO2 treatment?.BIOGEOCHEMISTRY,139(2),197-213. |
| MLA | Sun, Jianfei,et al."Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO2 treatment?".BIOGEOCHEMISTRY 139.2(2018):197-213. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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